Concrete block.



No. 841,415. PATENTED JAN. 15, 1907.

s. D. MERTON.

CONCRETE BLOCK.

APPLIGATION FILED JULY 30, 1906.

sE'rH D. MERTON, or ST. LOUIS, MISSOURI.

CONCRETE BLOCK.

\ Specification of Letters Patent.

Patented Jan. 15, 1907.

' A plication filed July -30, 1906. Serial No. 328,390.

To all whom it may concern:

Be it known that I, SETH D. MERTON, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Im rovement in Concrete Blocks,of which the fol owing is a full, clear, and exact description, such as will enable others skilled I in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, forming part of this specification.

The figure is a perspective view of a hollow concrete block constructed in accordance with my invention This invention relates to concrete blocks; and the main object of my invention is to provide a concrete block which can be used in the construction of furnace-walls, thereby dispensing with the necessity of employing ski led labor for erecting walls of this char-, actor and accordingly reducing the cost of same.

Another object of my invention is to provide a concrete block having one face formed of refractory material and which is so constructed that it can be trans orted and handled Without liability of dis ocating the refractory material; and still another object of my invention is to provide a concrete block having one face formed of refractory material and which is so constructed that the refractory face or portions thereof can be repaired easily after the block has been set in the Wall.

To this end I have devised a hollow concrete block having one wall formed of a plurality of fire-bricks, which are held together by a bonding agent possessing a great degree of adhesive strength and means for tying or permanently connecting the fire-brick wall to the concrete portion of the block.

Referring to the drawing, which represents the preferred form of my invention, 1 designates the end walls of a hollow concrete block, and '2 designates a lurality of firebricks, which form one wal or face of the block, said bricks being laid in courses and held securely together by some substance 3, which possesses enough tensile strength to prevent the bricks from being dislocated when the block is jarred or joltedas, for exam 1e, when it is being transported from the p ace of manufacture to the place where it is to be used.

The fire-brick facing or wall may be held in place in any suitable manner; but I prefer to accomplish this by means of headers 4, which are embedded in the concrete end walls 1 of the block during theprocess of' molding the block. Preferably Portland-J cement mortar is used as the bonding agent for holding the fire-bricks together, as I have found that such material is sufliciently refractory to withstand the heat to which the fire-brick facin of the block is commonly subjected and aIso possesses sufficient tensile strength to hold the bricks to ether when the block is being transported. I ever, asbestos cement or any other binding adhesive material which is refractory'and possesses a great degree of strength could be used. as a bonding agent for withstanding higher temperatures, and accordingly I do not wish it to be understood that my invention is limited to the use of any particular kind of cement. If necessary, the concrete block could be reinforced at 1ts corners to prevent it from cracking in case the expansion and contraction of the fire-brick wall or facing. is very great. Fire-clay, however, which is generally used for holding fire-bricks together, could not be used in my construction as the bonding agent, as it does not possess sufficient tensile-strength to prevent the fire-bricks from being dislocated during the transportation of the block.

As the fireproof facing or wall of the block is made up of a number of bricks preferably of standard size, said facing can be repaired easily, if this should become necessary after the block had been set in the wall, by any mechanic or person of ordinary skill, and the material with which to repair the fireproof facing is always at handfso that no delayis caused by sendin to the manufacturer of the block, as wou d be necessary if the fireproof facing f desired, howof the block consisted of a single fireproof tile or number of tiles of tion.

While I have stated that my improved block is to be used in the construction of furpeculiar construenace-walls, it will of course be understood fire-brick which are held together by mate rial possessing sufficient adhesive strength to prevent said bricks from being dislocated during transportntion, and means connectedtransversely of the fire-brick wall and being embedded in. the concrete end walls during the process of molding the same, to tie said brick wall to the concrete walls; substantially as described.

In testimony whereof I hereunto allix my signature, in the presence of two witnesses, 20 this 27th day of July, 1906 SETH D. MERTON.

Witnesses:

WELLS L. CHURCH, CORA BADGER. 

